Hastelloy W®, UNS N10004, NiMo25Cr3Fe5 - nickel alloy

Hastelloy W®, UNS N10004, NiMo25Cr3Fe5 - nickel alloy according to ISO 18274, AMS 5786 and other standards

Hastelloy W, N10004 – description

Hastelloy W (UNS N10004) is a solid-solution-strengthened Ni-Mo-Fe-Cr superalloy with excellent dissimilar welding characteristics. Can be used for structural applications up to 760°C.

Applications

Used in aircraft engine repair and maintenance as a weld filler metal. Occasionally used in wrought form in older gas turbine engines.

Physical and Tensile Properties

Room temperature physical properties:

• Density: 9 g/cm³
• Liquidus Temperature: 1290 °C
• Solidus Temperature: 1375 °C

High-Temperature Coefficient of Thermal Expansion, from 20°C to:

• 500°C: 13.2 μm/m⋅K
• 600°C: 13.2 μm/m⋅K
• 700°C: 13.5 μm/m⋅K
• 800°C: 14.2 μm/m⋅K
• 900°C: 14.8 μm/m⋅K
• 1000°C: 15.3 μm/m⋅K

Tensile Properties of bars according to AMS 5755:

• 20°C:
  • Yield strength: 520 MPa
  • Tensile strength: 965 MPa
  • Elongation: 51.0 %
• 540°C:
  • Yield strength: 370 MPa
  • Tensile strength: 835 MPa
  • Elongation: 52.5 %
• 650°C:
  • Yield strength: 365 MPa
  • Tensile strength: 715 MPa
  • Elongation: 27.0 %
• 760°C:
  • Yield strength: 385 MPa
  • Tensile strength: 610 MPa
  • Elongation: 20.3 %
• 870°C:
  • Yield strength: 335 MPa
  • Tensile strength: 415 MPa
  • Elongation: 31.8 %
• 980°C:
  • Yield strength: 165 MPa
  • Tensile strength: 225 MPa
  • Elongation: 47.4 %
• 1100°C:
  • Yield strength: 73 MPa
  • Tensile strength: 120 MPa
  • Elongation: 79.0 %

Tensile Properties of GTAW welds:

• Room temperature:
  • Yield strength: 550 MPa
  • Tensile strength: 830 MPa
  • Elongation: 35 %
  • Reduction of area: 27 %
• At 870°C:
  • Yield strength: 275 MPa
  • Tensile strength: 295 MPa
  • Elongation: 45 %
  • Reduction of area: 53 %
• At 20°C, after aging at 650°C for 1000h:
  • Yield strength: 795 MPa
  • Tensile strength: 1105 MPa
  • Elongation: 14 %
  • Reduction of area: 16 %
• At 760°C, after aging at 760°C for 1000h:
  • Yield strength: 440 MPa
  • Tensile strength: 580 MPa
  • Elongation: 27 %
  • Reduction of area: 38 %

Tensile Properties of GMAW welds:

• Room temperature:
  • Yield strength: 550 MPa
  • Tensile strength: 875 MPa
  • Elongation: 38 %
  • Reduction of area: 32 %
• At 870°C:
  • Yield strength: 290 MPa
  • Tensile strength: 310 MPa
  • Elongation: 41 %
  • Reduction of area: 42 %
• At 20°C, after aging at 650°C for 1000h:
  • Yield strength: 760 MPa
  • Tensile strength: 1055 MPa
  • Elongation: 15 %
  • Reduction of area: 16 %
• At 760°C, after aging at 760°C for 1000h:
  • Yield strength: 400 MPa
  • Tensile strength: 565 MPa
  • Elongation: 30 %
  • Reduction of area: 47 %

Tensile Properties of SMAW welds:

• Room temperature:
  • Yield strength: 525 MPa
  • Tensile strength: 760 MPa
  • Elongation: 25 %
  • Reduction of area: 22 %
• At 870°C:
  • Yield strength: 250 MPa
  • Tensile strength: 260 MPa
  • Elongation: 14 %
  • Reduction of area: 15 %
• At 20°C, after aging at 650°C for 1000h:
  • Yield strength: 745 MPa
  • Tensile strength: 885 MPa
  • Elongation: 8 %
  • Reduction of area: 8 %
• At 760°C, after aging at 760°C for 1000h:
  • Yield strength: 395 MPa
  • Tensile strength: 530 MPa
  • Elongation: 11 %
  • Reduction of area: 14 %

Tensile Properties of welded (GTAW) plates of various nickel alloys, where Hastelloy W was the filler metal:

• Alloy X, 20°C
  • Yield strength: 400 MPa
  • Tensile strength: 780 MPa
  • Elongation: 52 %
  • Reduction of area: 55 %
• Alloy X, 870°C
  • Yield strength: 230 MPa
  • Tensile strength: 290 MPa
  • Elongation: 39 %
  • Reduction of area: 65 %
• Alloy 188, 20°C
  • Yield strength: 425 MPa
  • Tensile strength: 800 MPa
  • Elongation: 49 %
  • Reduction of area: 65 %
• Alloy 188, 870°C
  • Yield strength: 350 MPa
  • Tensile strength: 400 MPa
  • Elongation: 361 %
  • Reduction of area: 601 %
• UNS R30155, 20°C
  • Yield strength: 425 MPa
  • Tensile strength: 800 MPa
  • Elongation: 49 %
  • Reduction of area: 65 %
• UNS R30155, 870°C
  • Yield strength: 220 MPa
  • Tensile strength: 290 MPa
  • Elongation: 28 %
  • Reduction of area: 42 %
• Alloy 625, 20°C
  • Yield strength: 475 MPa
  • Tensile strength: 820 MPa
  • Elongation: 63 %
  • Reduction of area: 63 %
• Alloy 625, 870°C
  • Yield strength: 240 MPa
  • Tensile strength: 305 MPa
  • Elongation: 58 %
  • Reduction of area: 91 %
• Alloy 718, 20°C
  • Yield strength: 470 MPa
  • Tensile strength: 860 MPa
  • Elongation: 231 %
  • Reduction of area: 311 %
• Alloy 188 / R30155, 20°C
  • Yield strength: 455 MPa
  • Tensile strength: 805 MPa
  • Elongation: 35 %
  • Reduction of area: 64 %
• Alloy 188 / R30155, 870°C
  • Yield strength: 235 MPa
  • Tensile strength: 325 MPa
  • Elongation: 19 %
  • Reduction of area: 19 %
• Alloy 625 / Alloy 718, 20°C
  • Yield strength: 425 MPa
  • Tensile strength: 905 MPa
  • Elongation: 432 %
  • Reduction of area: 422 %
• Alloy 625 / Alloy 718, 870°C
  • Yield strength: 270 MPa
  • Tensile strength: 330 MPa
  • Elongation: 51 %
  • Reduction of area: 95 %

Rupture Strength, Bars (AMS 5755):

• 705°C, 10h: 238 MPa
• 705°C, 100h: 190 MPa
• 760°C, 10h: 228 MPa
• 760°C, 100h: 179 MPa
• 760°C, 1000h: 130 MPa
• 815°C, 10h: 171 MPa
• 815°C, 100h: 124 MPa
• 815°C, 1000h: 85 MPa
• 870°C, 10h: 120 MPa
• 870°C, 100h: 83 MPa
• 870°C, 1000h: 55 MPa
• 925°C, 10h: 81 MPa
• 925°C, 100h: 54 MPa
• 925°C, 1000h: 36 MPa
• 980°C, 10h: 54 MPa
• 980°C, 100h: 36 MPa
• 980°C, 1000h: 22 MPa

Heat Treatment, Working and Machining

Standard recommended working and heat treatment parameters of wrought bars:

• Solution-treatment: 1185°C, 15 min; water quench

Welds don't require heat treatment.